1/* Copyright (c) 2013-2014 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#ifndef VFS_H
 7#define VFS_H
 8
 9#include "util/common.h"
10
11#ifdef _WIN32
12#include <io.h>
13#include <windows.h>
14#define PATH_SEP "\\"
15#else
16#define PATH_SEP "/"
17#endif
18
19#ifndef PATH_MAX
20#ifdef MAX_PATH
21#define PATH_MAX MAX_PATH
22#else
23#define PATH_MAX 128
24#endif
25#endif
26
27enum {
28	MAP_READ = 1,
29	MAP_WRITE = 2
30};
31
32enum VFSType {
33	VFS_UNKNOWN = 0,
34	VFS_FILE,
35	VFS_DIRECTORY
36};
37
38struct VFile {
39	bool (*close)(struct VFile* vf);
40	off_t (*seek)(struct VFile* vf, off_t offset, int whence);
41	ssize_t (*read)(struct VFile* vf, void* buffer, size_t size);
42	ssize_t (*readline)(struct VFile* vf, char* buffer, size_t size);
43	ssize_t (*write)(struct VFile* vf, const void* buffer, size_t size);
44	void* (*map)(struct VFile* vf, size_t size, int flags);
45	void (*unmap)(struct VFile* vf, void* memory, size_t size);
46	void (*truncate)(struct VFile* vf, size_t size);
47	ssize_t (*size)(struct VFile* vf);
48	bool (*sync)(struct VFile* vf, const void* buffer, size_t size);
49};
50
51struct VDirEntry {
52	const char* (*name)(struct VDirEntry* vde);
53	enum VFSType (*type)(struct VDirEntry* vde);
54};
55
56struct VDir {
57	bool (*close)(struct VDir* vd);
58	void (*rewind)(struct VDir* vd);
59	struct VDirEntry* (*listNext)(struct VDir* vd);
60	struct VFile* (*openFile)(struct VDir* vd, const char* name, int mode);
61};
62
63struct VFile* VFileOpen(const char* path, int flags);
64
65struct VFile* VFileOpenFD(const char* path, int flags);
66struct VFile* VFileFOpen(const char* path, const char* mode);
67struct VFile* VFileFromFD(int fd);
68struct VFile* VFileFromMemory(void* mem, size_t size);
69struct VFile* VFileFromFILE(FILE* file);
70
71struct VDir* VDirOpen(const char* path);
72
73#ifdef USE_LIBZIP
74struct VDir* VDirOpenZip(const char* path, int flags);
75#endif
76
77#ifdef USE_LZMA
78struct VDir* VDirOpen7z(const char* path, int flags);
79#endif
80
81struct VFile* VDirOptionalOpenFile(struct VDir* dir, const char* realPath, const char* prefix, const char* suffix,
82                                   int mode);
83struct VFile* VDirOptionalOpenIncrementFile(struct VDir* dir, const char* realPath, const char* prefix,
84                                            const char* infix, const char* suffix, int mode);
85
86ssize_t VFileReadline(struct VFile* vf, char* buffer, size_t size);
87
88ssize_t VFileWrite32LE(struct VFile* vf, int32_t word);
89ssize_t VFileWrite16LE(struct VFile* vf, int16_t hword);
90ssize_t VFileRead32LE(struct VFile* vf, void* word);
91ssize_t VFileRead16LE(struct VFile* vf, void* hword);
92
93#endif